package com.study.webapp.socket.netty.http;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.stream.ChunkedWriteHandler;

public class HttpFileServer {

    private static final String DEFAULT_URL = "src/com/study/webapp/socket/netty/http";

    public void run(final int port, final String url) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup,workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast("http-decoder",new HttpRequestDecoder());
                            ch.pipeline().addLast("http-aggregator",new HttpObjectAggregator(65536));
                            ch.pipeline().addLast("http-encoder",new HttpResponseEncoder());
                            ch.pipeline().addLast("http-chunked",new ChunkedWriteHandler());
                            ch.pipeline().addLast("fileServerHandler",new HttpFileServerHandler(url));
                        }
                    });
            ChannelFuture future = b.bind("10.68.184.3",port).sync();
            System.out.println("HTTP文件目录服务器启动，网址是 : " + "http://10.68.184.3:"
                    + port + url);
            future.channel().closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }

    public static void main(String[] args) throws Exception {
        new HttpFileServer().run(8080,DEFAULT_URL);
    }
}
